The Moonlight Rib is the ridgeline you see after coming through the notch from the parking lot and looking down to your right. (The Northeast side of the formation.)You will see some crystals which lead up to a ledge. Climb up to the ledge (about 12-15 feet) and walk straight while veering to your left for a few feet where you will see a gully/chimney on your right. Climb this for about 15 feet and you will see two horns which should be slung on your right while the main formation of the fan i...[more]Browse More Classics in SD